Extension for electric-light sockets



Aug. 18, 1925.

C. A. CHURCH EXTENSION FOR ELECTRIC LIGHT SOCKETS Filed Aug. 27. 1924' $2? a w w M F QM Z W Ill 4 WWW flaw w \iiri/ M WM 5 3 a ave-212.0%

Patented Aug, 18, 1925.

* UNITED cncrr. Anrnun cannon, or rnrnnnono, oiv'ranro, cnnnna.

EXTENSION FOB ELECTRIC-LIGHT SOCKETS.

Application filed August 27, 1924. Serial No. 734,514.

To all whom it may concern Be it known that I, Cnon. ARTHUR Cnuncn,

a subject of the Kingof Great Britain,

resident of the city of Peterboro, in the Province of Ontario, in the Dominion of Canada, having invented certain new and useful Improvements in Extensions for Electric-Light Sockets, do hereby declare that the following is a full, clear, and exact description of the same.

The invention relates to improvements in extensions for electric light sockets as described in the present specification and shown in the accompanying drawings which form a part of the same. i

The object of the invention is to provide a connecting device, more particularly for domestic use, whereby push plugs of cords extending from electrical appliances may be readily attached to an ordinary light socket without having to remove its shade in order to comfortably effect such connection. With this object primarily in view, a further purpose of the invention is to provide a device of this class which will be economical in construction and efficient in its use.

Whereas in the connecting of modern electrical appliances with an ordinary light socket, on account of the small space available within the light shade not conveniently permitting of the insertion of a persons hand for the purpose of screwing the connection in place in the socket, the present invention consists of an elongated insulative member of suflicient length that same may be connected without either removal of the light shade or cramping of the hand of the party efiecting such connection. The said insulative member bears a threaded end for the purpose of screwing into the light socket, its other end being formed receptive to contacts of a push plug; electrical connections existing,of course, between the two ends for the transmission of current from the socket to the plug.

Referring to the drawings, Figure 1 is a view illustrating the invention attached to a socket of an electric light fixture possessing a shade, the socket and its shade being shown in dot and dash lines.

Figure 2 is a longitudinal section of the extention.

Figure 3 is a transverse section thereof taken on the line 2-2 of Figure 1.

Figure 4 is a sectional view of the push plug depicted in Figure 1.

, Like numerals of reference indicate cor: responding parts throughouteach figure of the drawings. i

In the drawings, the reference numeral 1 denotes the conventional socket shown in Figure l of the drawings, and 2 the, shade K appended to same, which, of course, may be of any shape or design. i

The extension itself comprises companion sections 3 of a semi-circular cross section, which together form a round shaped body 41-of a length suflicient to project beyond the mouth. of the average electric light shadein order to obviate manufacturing in a variety of lengths.

Each section 3 is provided with a corr'ugated periphery 5 terminating short of its ends for the purpose of affording a secure manual grip upon the body t. Moreover, one end of each section is flarred annularly, as at 6, terminating in an abrupt face 7, while the other end is formed with a projec tion 8.

The abutting face 9 of each section, discernible in Figure 8, is provided with a pair of parallel longitudinally extending grooves 10, which, when the sections are brought together, register to produce channels of rectangular cross sections as shown. These channels at the abrupt end-face 7 are enlarged and the openings formed thereby are restricted by integral projections 11.

One of the channels at the other end of the body 4: emerges into a lateral opening 12, the other passing therethrough in close proximity to the projection 8.

13 and 1 1 are a pair of electrodes preferably constructed of copper ribbon; an end of the electrode 13 being bent back upon itself as at 15 for a distance slightly less than the length of the openings at the flarred ends 6 of the body-forming sections and extended to the projection 8 at the other end. The other electrode 14 is provided with a similarly bent. end 16 and extends to the lateral opening 12, thus providing a pair of resilient terminals receptive to a push plug.

These electrodes are inlaid in their correct positions between the sections 3 which are then affixed by passing bolts 17 through apertures and securing same therein with nuts threaded thereupon.

Upon the complementary sections being assembled to form the body 4, a metallic ring 18 threaded to engage a light socket is 15 section having a linear groove extending along its contiguous face, said grooves registering one with the other in order to constitute a channel, one end of which is en larged and open, an electrode inlaid in the channel with the portion within its enlargement bent back upon itself, thus "forming a resilient contact engageable by a prong; and a constrictive projection positioned in advance of the return bend of the electrode in order to effect its obstruction and also to render only the outer face of the contact accessible to the prong.

Signed at Peterboro, Canada, this 7th day of June 19%. V

CECIL ARTHUR CHURCH. 

